The card's configuration utility will tend to remember the last AP that was connected to. Therefore, it require you to do a rescan or in the WinXP, reorganize the the wireless connection for the card to link with a new ESSID device.

When I surf the Internet, I can ping but I can't surf some websites. Why?

Details

There seems to be some virus or browser bug recently that is causing this issue. It happens to non-OvisLink products also. You can test this syndrome by pressing "Control-F5" to let the webpage reload when you can access the website. If pressing Control-F5 works, then it is very likely to be the case. In this case, please reboot your machine in safe mode and runs a virus scan (make sure you have the latest virus definition). Or reinstall your browser program.

Another possibility is the MTU and MRU value are set incorrectly with your ISP. In this case, please lower the MTU and MRU value to lower values (such as 1463, 1432, or 1400).

What is AdHoc and Infrastruture ?

Details

AdHOC and Infrastructure are 2 ways to form the wireless network.

ADHOC (Peer To Peer):

The wireless network are formed by wireless cards only. There is no access point or wireless router in the network. Cards communicate directly with each other. The biggest disadvantage for AdHoc mode is that no network device can be attached to the network directly, thus making connection to LAN and Internet difficult. It is not recommended to use AdHOC except for small environment. To work in AdHoc mode, the cards must be set to the same SSID(Network Name) and set to AdHoc(Peer To Peer) mode..

Infrastructure (Access Point):

The wireless network are formed by Access Point and cards. AP or wireless router serve as a hub for connections to the cards. With Access Point, the users can connect to wired network device such as LAN, router, and internet. Furthermore, AP allows access control and other security features. AP also extend the range between the cards. All AP and cards in a infrastructure network must use the same ESSID(Network Name) and setup to work in Infrastructure (Access Point) mode.

What is WEP encryption ?

Details

Wired Equivalent Privacy (WEP) is the method for secure wireless data transmission. WEP adds data encryption to every single packet transmitted in the wireless network. The 40bit and 64bit encryption are the same because of out 64 bits, 40 bits are private. Conversely, 104 and 128 bit are the same. WEP uses a common KEY to encode the data. Therefore, all devices on a wireless network must use the same key and same type of encryption. There are 2 methods for entering the KEY, one is to enter a 16-bit HEX digit. Using this method, users must enter a 10-digit number( for 64-bit) or 26-digit number( for 128-bit) in the KEY field. Users must select the same key number for all devices. The other method is to enter a text and let the computer generate the WEP key for you. However, since each product use different method for key generation. It might not work for different products. Therefore, it is NOT recommend to use. When enable the WEP key, please remember to enable the AP's WEP function before enabling the card's.